﻿#include <iostream>
#include <functional>
#include <vector>
#include <algorithm>
using namespace std;
//内建函数对象_关系仿函数
//大于 greater
class MyCompare {
public:
	bool operator()(int v1,int v2)
	{
		return v1 > v2;
	}
};
void test01()
{
	vector<int> v;
	v.push_back(10);
	v.push_back(30);
	v.push_back(20);
	v.push_back(50);
	v.push_back(40);
	for (vector<int>::iterator it = v.begin(); it != v.end(); it++)
	{
		cout << *it << "  ";
	}
	cout << endl;
	sort(v.begin(), v.end(), greater<int>());
	//greater<int>()内建函数对象
	for (vector<int>::iterator it = v.begin(); it != v.end(); it++)
	{
		cout << *it << "  ";
	}
	cout << endl;
}
int main()
{
	test01();
}